Coating on flexible substrates
The FOM Mini Roll Coater was developed at the Danish Technical University to mimic processing in a roll-to-roll machine without the high material consumption and upstart time requirements. It is a hands-on, precision instrument for slot-die coating any solution-processable material onto flexible substrates.
Application examples from the literature
In this article from Frederik Krebs’ and Hongzheng Chen’s groups at the Danish Technical University and Zhejiang University and published in October 2015 (DOI: 10.1039/C5TA07008B), the Mini Roll Coater is used to deposit the perovskite precursor onto a PEDOT:PSS layer modified with a self-assembling monolayer.
In another article from Frederik Krebs’ group published in June 2015 (DOI: 10.1002/aenm.201500569) the efforts of upscaling from spin-coating and evaporated back electrodes to fully printed perovskite solar devices is presented. The Mini Roll Coater is used to slot-die coat several subsequent layers including of course the perovskite active layer.
The machine in operation
At University of Washington, Seattle. Prof. Alex K.Y. Jens group: https://youtu.be/bwSW7JN-JmU?list=PL8ytZf7heeltm_ZZ9Fk9Y9hoOsvXNxZK7
At the Danish Technical University:
At the Okinawa Institute of Science and Technology: